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प्रश्न
Choose the correct alternative:
The product of r consecutive positive integers is divisible b
विकल्प
r!
(r – 1)!
( r + 1 )!
rr
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उत्तर
r!
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संबंधित प्रश्न
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| C1 | C2 |
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| (b) All letters are used at a time | (ii) 240 |
| (c) All letters are used but the first is a vowel | (iii) 360 |
